Hi , I want to know if there is any way I can evaluate a string in rule language. Here is what I am doing DroolsTest.java has a class as follows. DroolsTest.java public static class cpuTracker{ private String machinename; private String averageCPU; } I want to set a rule in sample.drl such that if the averageCPU is greater than 80 an action is taken. Sample.drl rule "High CPU Usage" when $cpuUsage : cpuTracker( Integer.parseInt(averageCPU) > 60 ) then System.out.println("CPU usage is very high!!"); end The compiler throws the following error " *no viable alternative at averageCPU for rule High CPu usage*". I am unable to convert string to int using Inetger.parseInt(). Any idea why it is throwing me an error and any help with rule language syntax that I can get online? Can't find all the answers from http://docs.jboss.org/drools/release/5.2.0.Final/drools-expert-docs/html_... Any help is highly appreciated. -- View this message in context: http://drools.46999.n3.nabble.com/query-in-drools-expert-rule-language-tp... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Hi luane, thanks for that. Using the expression under eval() solves the problem. I don't develop the objects I am applying the rule against. So I have to make do with string datatype. cheers. -- View this message in context: http://drools.46999.n3.nabble.com/query-in-drools-expert-rule-language-tp... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users